Combined foot-warmer and muffler.



M. H. GARRISON.

COMBINED FOOT WARMER AND MUFFLER.

APPLICATION FILED JAN..11,1912.

Patented J an. 7, 1913.

UNITED STATES PATENT' OFFICE MILBUBN H. GARBISONQOF ooEANciTY, -NEWJEnsEY. l

COMBINED room-WARMER AND MUFFLER'.

Specification of -Letters Patent.

To al 'u1/wm t may concern Be it known that I, MILBURN GAR- .RIsoN, acitizen of the United States, residing at Ocean City, in the county ofCape May and State of New Jersey, .have inventhas for its principalobject the providing of a construction and arrangement of parts wherebythe exhaust gases, result-ing from combustion of fuel for propulsionpurposes,

ma be utilized for heating purposes. further object of the p-resentinvention is to'pi'ovide a combined foot vwarmer and muffler soconstructed and arranged that the exhaust gases may pass freely, withlittle or no noise, therethrough without the production of undesirableback pressure.`

A still further object of fthe present vinvention is to rovide aconstruction and arrangement of parts whereby the exhaust gases from aninternal combustion engine may be caused to pass in the ordinary andwell understood manner through a-imuiiier; or

said gases may be caused toexhaustlpartly through the combined footWarmer and muiiier of t-he invention and partly through` .f

' an automobile of any approved construction an ordinary mutiler; or ifdesired said gases may be caused to exhaust entirely throughy compact,durable, efficient and comparatively inexpensive vcombined foot warmerand muffler, which may be readily attached to automobiles, motor boats,launches, air ships or the like without necessitating reconstruction ormaterial changeV of the conveyance parts.

Other objects of the invention` relate to the providing of generaldetails of c'onstruction and arrangement of'parts` as will hereinafterappear.

With these and other objects in view the invention consists of theimprovements hereinafter'described and finally claimed, ref.- erencebeing had to the accompanying drawings forming part hereof and in which:

Figure 1, is a view in side elevation of.

the invention as applied to. thfe` internlal 1 veyance,

`combustion engine. of an automobile, the vehicle 'parts being shown indot-ted lines, Fig. 2,- is a top o-r plan view of Fig. 1, with thevehicle parts removed, Fig. 3, is a.A

longitudinal 'sectional view taken on the line '3 3 of Fig. '2, butdrawnl to an en- Patented Jan. 7,1913. iip'pnmnm mea January i1, 1912.serial No. 670,714.

larged scale, Fig. 4, is a top or plan View partly sectionedof Fig. 3,with the cover of the base removed, Fig. 5, is al View in transversesection t'akenon the lin'e 5 5 of Fig. 3, and illustrating the manner ofapplying the parts to the ooring of a con- Fig. 6, is a view insideelevation of the regula-ting valve used iny connection with the aboveapparatus, and Fig. 7, is a 'View in section taken upon the line 7-7 ofFig. 6.

T he combined foot warmer andmuiiler of the invention is intended to beprimarily appli/ed to automobiles and like conveyances. It will bereadilyunderstood, however, that the parts about to be described maywith equal readiness be applied to motor boats, launches, air ships andthe like, in consequence of which, the following description taken inconnection with the accompanying drawings wherein an automobilek isshown and d escribed as being equipped with the apparat-us'of theinvention,'is merely for illus'- trative purposes.

Referring to the drawings 10, designates equipped with an internalcombustion engine 11, the cylinders of--which discharge into acommonexhaust pipe 12, connected with an ordinary muffler 13.Intermediate the engine 11, 'and muiiler 13, the exhaust pipe 12, isAdivided into two sections and equipped with a bifurcated valve casing14, the inlet end 15, of which receives `Vthat end of 'the exhaust pipe12, adjacent the engine and the outlet ends 16, and' 17, of `which re-`spectivelyreceive the other section of the exhaust pipe 12, and a pipeor connection 18, which leads to the combined foot warmer and muiiler19, of the invention. The combined footwarmer and muiier 19, is shown ascomprising a generally rectangular elongated two-part casting of whichthe base 20, constitutes a shallow open top or dish-like casing` and ofwhich the top comprises a removable cover 21. The base or casing 20, ismarginally flanged as at 22, said flange being i. formed integral withthe casing parts and "being provided with screw or bolt receivingvopenings-23. The base oi' casing is provided with an inlet port 24, inone side of the casing adjacent one end thereof and is provided with ano itlet port 25, upon its opposite side adjacent the other end of thecasing. n These inlet and. outlet ports are formed by first swellingout, as at 26, the bottom of the base or casing 20, to form adepression, see Figs. 3, and 5, and by providing the side walls of thebase or casing with screw-threaded socket-s of a diameter equal to thewidth of the depression for the reception of suitable pipings. As shownin Fig. 5, this brings the inlet and outlet ports substantially belowthe plane of the bottom of the base or casing 20, for a purpose to bepresently described. Within the base or casing 20, and preferably formedintegral with `the side walls of the base or casing are verticallyarranged transversely extending baiiie plates'27, and 28. These baieplatesv are disposed between the ports 24, and 25, and are suitablyspaced `with respect to the ends o'f the casing and to each other andextend from the same wall of the base or casing that has a port therein,or more properly speaking said battles extend from the oppositesidewalls of said base or casing. As shown in Fig. 4, they terminate shortof the opposite 'casing wall. In other words, the baiiles divide thecasing interior into compartments of equal size which constituteexpansion chambers, three being shown in the drawings. 4

are substantially below the plane of the two end expansion chambers saidtwo end expansion chambers are of equal area to the center expansionchamber. Thus exhaust gases may pass freely through the combined footwarmer andfmuitler witho-ut the production of any undesirable backpressure calculated to retard the speed'of the engine or such as wouldtend to stop the' engine particularly when the same is being crankedpreliminary to starting the same. Also this spacing of the battlesserves to reduce to a minimum, noise within the combined foot warmer andmuffler when exhaust gases are passing therethrough. This is truebecause as gases first enter the end Aexpansion comvpartment they expandand as they pass around the first battle they somewhat co-ntract only toimmediately expand in the next expansion. compartment and so on inregular vsuccession to the exhaust portl without choking or backpressure. Another advan` tage possessed of .spacing the battles is thatample room is present within the base or casing to prevent clogging ofthe parts by virtue of deposits of carbo-n from the waste gases, whichcake and are very dilicult to remove from crowded spaces. In the presentCase as the base .or casing is shallow and the expansion chambersunobstructed, and of large area cleaning of the parts ina-y be By virtueof the fact that the inlet and exhaust ports readily efected. Byremoving the cover 21, access may be readily had to the base or casinginterior by virtue of its open top. This cover 21, considered in plan is-of the 'same relative outline .as the base or casing but it is oflarger dimensions, so that its marginal edges project considerablybeyond the marginal flanges of the base or casing. 20. The cover 21, isprovided in its marginal flanges with counter-sunk openings 29, for thereception of screws, bolts or the like 30, for securing the combinedfoot warmer and muffier to the floor 31, 'of the automobile 10, see Fig.5. In this connection, it may be remarked that the cover 21, is furtherprovided with counter-sunk openings adapted to register with theopenings 23,-of the flanges of the base or casing 20, for the receptionof screws, bolts or the like 32, for securing the cover with respect to,the base or casing 20. Between the flanged portion of the base 20, andthe bottom of the cover 21, is a packing of asbestos 45, to prevent theescape of gases to the conveyance being heated. It may be here statedthat in practice, the Hoor 31, has made there` in an opening so that thebase or casing 20, may be passed therethrough the anged portion of thebase or casing resting upon the counter-sunk portion 33, of the floor.The flooring is further counter-sunk as at 34, so that the marginalportions of the cover come flush with the top of the iooring. The coveris then secured to the flooring and to theIbase or casing as beforedescribed and as shown in Fig. 5. Formed integral with the top of thecover 21, are parallel longitudinally extending ribs As shown these ribsare not continuous but constitute a series 4of short suitably spacedsect-ions, alternate rows of ribs of which overlap the spaces betweenthe sections of the other rows. By this construction and arrangement ofparts a large heat radiating surface `is provided. It has beendemonstrated in practice that it is necessary to make the ribs of shortsectio-ns because of the fact that in casting, the cover cannot bewithdrawn from t-he sand box 'if the ribs are continuous. In use theseribs serve to form a convenient foot rest for the occupants of anautomobile, motor boat, launch, air ship or the like. The bottom of' thecover 21, is provided with depending Hanges 36, which serve as guides toproperly aline the. openings of the cover with the openings 23, of theflanged base or casing.

As shown in Figs. 1, and 2, a'pair of com-v bined yfoot warmers andmutilers are disclosed. In this connection, it may be rel marked thatone of the footy warmers and muttlers is located at the rear end of thehood of the automobile and the other is positioned at the rear of theseat of the operator. IVhere a pair of combined foot warmers andmuiiiers are used a pipe or connec-v tion 37, couples together the. pairof foot warmers and mutliers and an exhaust connection 38, leads totheatmospheric air from the rear foot warmer and muiiier. For controllingthe passage of exhaust gases through the mutller 13, or partly throughthe mutler 13, and partly through the combined foot warmer and muiiierof the invention or entirely through the combined foot warmer andmuiiler, useis made of the hereinbefore mentioned valve. As shown inFigs. l, and 2, the bi-urcated valve casing 14, is arranged adjacent thefoot board of the automobile 10, and has extending upwardly therefrom'through the said foot board a manipulating handle 38. This handle 38, isequipped with a valve 39, of damper like construction, see Figs. 6, and7, and is mounted for partial rotation through the valve casing. Inoperation, if it is desired to exhaust all of the waste products. ofcombustion from the engine through the combined foot warmer and muiiierthe damper-like valve 39, is moved to the position shown by full linesin Fig. 7. If desired `to cut out the combined footwarmer and muflierentirely and exhaust through the mutller 13, the damper-like valve 39,is moved to the position shown by dotted lines in Fig. 7. Obviously,movement of the damper-like valve to a point intermediate of these twoextreme points will. cause waste products of combustion from the enginelto` pass partially through. the combined foot warmer and mutiler andpartially', through themutlier 13. A convenient form of securing thepipes 12, and 18, with respect to the valve casing is to provide thevarious branches of the valve casing with split ends 40, and clamp saidpipes with respect to said valve casing by means of bolts .41.

What I claim `is: p 1. lIn a combined foot warmer andmuiiier designedfor utilizing the exhaust of an in- 445 \ternal combustion engine thecombination Iof a shallow open top elongated casing having formedintegral therewith marginal flanged port-ions, said casing having aninlet port in one side adjacent one end and an outlet port onthehopposite side adjacent the other end, vertical batlies arrangedtransversely within said casing between said ports, one extending fromthe side of the `casing that has the inlet port therein and theother-extending vfrom the side of the casing that has the outlet porttherein, each battle terminating short of the opposite side of thecasing, a removable cover having aribbed top said ribs being arrangedlongitudinally of said cover and means for clamping the eoverto thecasing. l

2. In a combinedv foot warmer and 'muler designed for utilizing theexhaust of an .in-

ternal combustion engnethe combination of a shallow open top elongatedcasing having formed integral therewith marginal flanged portions, saidcasing having an inlet port in vone side adjacent one end and an outletporton the opposite side adjacent the other end,

vertical baffles arranged transversely within said casing between saidports, one extending from the side of the casing that has the inlet porttherein and the other extending from the side of the casing that has theoutlet ,port therein, each balie terminating short of the opposite sideof the casing, a removable cover having al ribbed top said ribs beingarranged longitudinally of said cover, packing strips between theflanged portions of said easing and said cover and means for clampingthe cover to the casing.

3. In a combined foot-warmer and mui for utilizing the exhaust of aninternal combustion engine the combination of a shallow open topelongated casing having a flanged marginal port-ion, the ends of saidcasing being swelled out at its base line to form internal depressionsbelow the plane of the casing base and the side walls of said easingbeing provided immediately adjacent said depressed portions with inletand outlet ports, vertical. baiiles arranged transversely within saidcasing between saidports and suitably spaced with respect to each otherand to the ends of the casing,

one extending from the side of the casing lcasing and a removable coverfor said casing.

4. In combination -an internal combustlon englne and its complementalmuffler, a combined foot warmer and mui'ler for utilizing the exhaust ofthe engine said foot j warmer and muffler comprisin a shallow open topelongated casing having an inletJ port in one side adjacent one end andan outlet port on fthe opposite side adjacent the other end, verticalbaies arranged transversely within said casing between said ports oneextending from the side of the casing that has the inlet .port thereinand the other extending from the side of the casing that has the outletport therein each battle terminating short of the opposite side .ofthecasing, a removable cover for said casing, a two-part exhaust connectionfor-the engine one section leading to the muiler and` the vother sectionleading to the combined foot warmer; and muiller and a valve at thejunction of saidv sections adapted in one position to-divert the exhaustgases through the mui'ler and in another position to divert. exhaustgases through the combined# muier said muler and combined foot Warmerand muiiler having separate and distinct eX- hausts to the atmosphericair. Y

5. In a combined Afoot Warmer and Inuler designed for utilizing theexhaust of an interna-l combustion engine the combination of a shallowopen top elongated casing having formed integral therewith marginalflanged portions, said casing having an inlet port in one side adjacentone end and an outlet port on the opposite side adj acentv the otherend, vertical baffles arranged transversely Within said easing betweensaid ports,' one extending from the side of the; easing that has theinlet port 4therein 15 -andf'thevother extending from the side ofthev'casin .each balgeterminating short of the oppothat hasthe outletport therein,

site side `'of theycasing a removable `@over for said casing and meansfor cover to saidcasing.

In :testimony whereof I have hereunto signed my nameL MI'LBURN ARRISON iWitnessesz AGNES C. CASKEY, WILLIAM J. JACKSON,

clamping the 20

